Liquid dispensing device



Norv. 16, 1948. F. w. oPlTz LIQUID DIsPEN'sING DEVICE Filed June 14, --1945 Patented Nov. 16, 1948 UNITED 4S'IATES PAT ENT OFFICE LIQUID nIsrENsrNo DEVICE :Fred W. Opitz, Chicago, Ill.

Application :im 14, 1945, serial No. 599,359

1 The present invention relates generally `to liq uid dispensing valves, but more particularly to a simple and compact device which ejects the liquid on the outward stroke of a spring actuated plunger. p

A further object o-f the invention is to `provide a simpl-e and improved liquid dispensing attachmentior a small bottle for dispensing such liquids as hand lotion and the-like whereby the bottle may be held in inverted position in one 'hand so that the index ln'ger of the same hand is 4free to manipulate the plunger'.

A further object of the invention is `to provide a novel and improved as well as simplified construction of liquid dispensing attachment for a bott-le where upon the repeated reciprocation of the piston and the return of the bottle to its normal vertical position, a vacuum will be created in the neck of the .bottle .so that the .same will siphon back any liquid remaining inthe discharge outlet and thereby leave the discharge duct clean `and free for future use.

These and other objects are accomplished by providing `a construction and an arrangement of the various parts in the manner 'hereinafter described and particularly `pointed out 1in the appended claims. v

Referring to the drawings: Fig. l. is a side elevational View showing the manner in which the `hot-tie is til-ted for dispensing the liquid therefrom with my improved liquid dispensing attachment-connectedthereto;

Fig. `2 -is lan enlarged top planview of the same;

Fig. 3 -is an enlarged vertical cross sectional View taken on the lines 3-3 `in Fig. 2; and

Fig. 4 is a, similar enlarged view showing the plunger compressed preparatory to electing a charge of liquid therefrom.

In illustrating :one form of my invention I have shown the same in connection with a conventional type of small bottle Il] containing, for example, hand lotion, which has mounted on the threaded neck of the bottle, my improved form of liquid dispensing valve generally indicated by the reference character I I. The dispensing piston in this instance comprises a substantially cylindrical casing I2 which has a lower enlarged internally threaded collar portion I3, which provides the means for securing the same to the threaded neck of the bottle IIJ. Formed integrally with the casing I2 and located inside the internally threaded collar I3 is an annular sleeve I4, which forms in effect a liquid and piston chamber I5. The bottom of the chamber I5 forms a flat seat I6 for a disc-like plunger or piston member II. The pis- 2 ton member Il is secured to a plunger `or piston rod i8. The `other end ofthe plunger rod I3 has secured thereto `by threaded engagement there with a thimble-like cap IB. The cap 9 is telescopica-Uy and reciprocally mounted in a cylindrical .bore or spring chamber 2l! formed in the longitudinal-center of the .casing I2. The plunger rod is extends through an aperture ZI :formed in the valve seat I-. Surrounding the aperture 4ZI is a beveled surface A2:2 on which is seatedfcomplenientary fitting packing washer 23. Resting on the packing washer 23 is one end of a compres- .sion vspring 24. `The spring 24 surrounds the plunger rod i8 and has its other end seated in the "bottom of ythe cylindrical recess 25 of the plunger cap I8. Formed integrally with the casing and `.projecting at an angle with respect thereto is Aa discharge nipple 26. Extending through the nipple :and v.communicating with the valve chamber I5 is an outlet duct-or port 2 through which the liquid is .discharged on the spring-actuated return stroke of the plunger. It will be noted that the discharge .duct or outlet port communicates with the liquid chamber I 5 at a point below the piston member Il `when the piston member is seated on its seat I6 as shown in Fig. 3 of the drawings. This Iarrangement obviously permits the partial vacuum created in the 'bottle to siphon the liquid `out of the outlet duct .21 so that it is kept clean and-free for future use.

`summarizing vthe advantages and functions of operation of myimproved liquid dispensing piston, it will, of course, be understood that by tilting the bottle angularly to the position shown in Figs. l or -4 of the drawings, the liquid in the bottle will now into the neck thereof and into the piston chamber I5, so that when the plunger is depressed by the forefinger to the full-line position shown in Fig. 4 of the drawings, the liquid will flow into the chamber I5 below the disc-like piston member I1 and upon releasing the pressure on the cap I9 or plunger, the spring 24 will actuate the plunger outwardly and trapped liquid be- 10W the piston member I'I and within the piston 4chamber I5 will be forced out through the outlet port 21 of the nipple 26. Upon repeating the reciprocation of the plunger, additional amounts may be discharged from the nipple. In this connection it will be noted that on each occasion that the piston member is depressed inwardly, it creates in effect a suction in the outlet duct 21 to draw the liquid therein as Well as the air for the next succeeding charge. In other words, this action creates in eiect a partial vacuum in the bottle so that on returning the bottle to its nor- 1. A liquid dispensing device comprising a cas'- ing adapted to be mounted in threaded Aengagement with a bottle, said casing having a piston chamber and a spring chamber, a seat formed in said piston chamber, a plunger rod extending from said spring chamber into said piston chamber, a discharge nipple carried by said casing hav-` ing an outlet duct communicating with said piston chamber, a disc-like member mounted on the inner end of said plunger rod and normally seated on the seat in said chamber, the inner end of said outlet duct communicating with said piston chamber at a point spaced from the seat of said piston member and normally in communication with said piston chamber, and a spring mounted in said spring chamber and surrounding said plunger rod for actuating said disc-like member outwardly to discharge the liquid therefrom.

2. A liquid dispensing device comprising a casing, a reciprocable plunger mounted in said casing, said casing having a piston chamber therein, a disc-like piston member carried by said plunger and reciprocable in said piston chamber, said casing having an outlet duct therein communicating with said piston chamber at a point below the normal position of said disc-like piston member for normally retaining communication between said outlet duct and said piston chamber,

and a spring mounted in said casing and engageable with said plunger for actuating said disclike member to discharge the liquid through said duct.

3. A liquid dispensing device comprising a cas- 45 ing, a reciprocable plunger mounted in said casing, said casing having a piston chamber` therein, a disc-like piston member carried by said plunger and reciprocable in said piston chamber, said casing having an outlet duct therein communi-95,0

eating with said piston chamber at a point below the normal position of said disc-like Valve member, a depressible cap carried by said plunger reciprocally mounted in said casing,vand a spring surrounding said plunger and engageable with-5 5 4 said cap for actuating said disc-like member to discharge the liquid through said duct.

4. A liquid dispensing device comprising a cylindrical casing having axially positioned and oppositely extending piston and spring chambers therein, there being an opening extending between said chambers, a reciprocable plunger mounted in said casing and extending through said opening, a disc-like piston member carried by said plunger and reciprocable in said piston chamber, there being an outlet duct through said casing from said piston chamber, said outlet duct normally communicating with said piston chamber, and a spring mounted in said spring chamber and engaging said plunger for actuating said disc-like member to discharge the liquid through said outlet duct.

5. A liquid dispensing device comprising a cylindrical casing having axially positioned and oppositely extending piston and spring chambers therein, a partitionv wall between said chambers having an opening therein, a reciprocable plunger mounted in said casing and extending -through said opening, a disc-like piston member carried by said plunger and reciprocable in said piston chamber, there being an outlet duct through said casing from said piston chamber, said outlet duct communicating with said piston chamber when said disc-like piston member is normally seated,

, a reciprocable cap mounted on said casing and secured to the outer end of said plunger, a spring mounted in said spring chamber and engaging said cap for normally actuating said plunger and disc-like member outwardly to discharge liquid through said outlet duct.

FRED W. OPITZ.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 804,468 Helmold et al Nov. 14, 1905 889,306 Hoffman et al June 2, 1908 931,984 Backman Aug. 24, 1909 962,682 Wade June 28, 1910 1,174,674 Byer Mar. 7, 1916 1,187,474 Hollingsworth June 13, 1916 1,514,567 ONeill Nov. 4, 1924 2,009,743 Morlok July 30, 1935 2,111,123 Morlok Mar. 15, 1938 2,180,989 Lohn Nov. 21, 1939 2,327,285 Opitz Aug. 17, 1943 2.329.689 Bell et al.' Sept. 21, 1943 

